Error when installing on Raspberry PI (1.5.5)

[darkroasted]

First thanks for your great project!

However when I try to install 1.5.5 using pip on my raspberry pi for LedFX then the install fails and provides the following output. Installing version 1.5.2 does not fail. How can i solve this?

Output: × Getting requirements to build wheel did not run successfully. │ exit code: 1 ╰─> [49 lines of output]

• meson setup /tmp/pip-install-xrnqqcws/python-rtmidi_2b76ce7b0c8149c3ae95fe46f87c31bd /tmp/pip-install-xrnqqcws/python-rtmidi_2b76ce7b0c8149c3ae95fe46f87c31bd/.mesonpy-6skv9tq0 -Dbuildtype=release -Db_ndebug=if-release -Db_vscrt=md -Dwheel=true -Dverbose=false -Dbuildtype=plain --native-file=/tmp/pip-install-xrnqqcws/python-rtmidi_2b76ce7b0c8149c3ae95fe46f87c31bd/.mesonpy-6skv9tq0/meson-python-native-file.ini The Meson build system Version: 1.2.1 Source dir: /tmp/pip-install-xrnqqcws/python-rtmidi_2b76ce7b0c8149c3ae95fe46f87c31bd Build dir: /tmp/pip-install-xrnqqcws/python-rtmidi_2b76ce7b0c8149c3ae95fe46f87c31bd/.mesonpy-6skv9tq0 Build type: native build Project name: python-rtmidi Project version: 1.5.5 C++ compiler for the host machine: c++ (gcc 10.2.1 "c++ (Raspbian 10.2.1-6+rpi1) 10.2.1 20210110") C++ linker for the host machine: c++ ld.bfd 2.35.2 Host machine cpu family: arm Host machine cpu: arm Found pkg-config: /usr/bin/pkg-config (0.29.2) Dependency jack found: NO found 0.125.0rc1 but need: '>=1.9.11' Found CMake: /usr/bin/cmake (3.18.4) Run-time dependency jack found: NO (tried pkgconfig and cmake) Run-time dependency jack found: YES 0.125.0rc1 Run-time dependency alsa found: YES 1.2.4 Run-time dependency threads found: YES Has header "semaphore.h" : YES Program python3 found: YES (/usr/bin/python3) Program cython found: YES (/tmp/pip-build-env-4tuqnt43/overlay/bin/cython) Run-time dependency python found: YES 3.9 Configuring version.py using configuration Build targets in project: 1 python-rtmidi 1.5.5

  Configuration
    Host machine system     : linux
    Python version          : 3.9
    Debug messages (verbose): False
    Build for wheel         : True
    JACK support            : True
    ALSA support            : True
    CoreMIDI support        : False
    Window MM support       : False
  
  User defined options
    Native files            : /tmp/pip-install-xrnqqcws/python-rtmidi_2b76ce7b0c8149c3ae95fe46f87c31bd/.mesonpy-6skv9tq0/meson-python-native-file.ini
    buildtype               : plain
    b_ndebug                : if-release
    b_vscrt                 : md
    verbose                 : false
    wheel                   : true

  Found ninja-1.11.1.git.kitware.jobserver-1 at /tmp/pip-build-env-4tuqnt43/overlay/bin/ninja

  meson-python: error: Required "project.version" field is missing and not declared as dynamic [end of output]

[SpotlightKid]

Thanks for the report!

The build backend changed from mesonpep517 to meson-python in version 1.5.3.

Unfortunately meson-python 0.14.0, which in your case apparently was downloaded & used in the build process, changed how it handles the project version in pyproject.toml:

https://meson-python.readthedocs.io/en/latest/changelog.html#id1

when pyproject.toml does not contain a version field and version is not declared dynamic, raise an error instead of silently using the version declared in meson.build.

This means we have to add dynamic = ['version'] to pyproject.toml now, when using meson-python >= 0.14.0.

I'll fix this and make a new 1.5.6 release asap. In the meantime, you can continue to use version 1.5.2. The actual library code hasn't changed.

[darkroasted]

Awesome! Thanks for your speedy reply and help!

I'll be looking forward to the merge and the 1.5.6 packet!